[c-nsp] NPE-G2 Gigabit Ignored Errors

[Rodney Dunn]

On Fri, Sep 12, 2008 at 02:40:04PM -0400, Clayton Zekelman wrote:
> 
> No luck... didn't fix it. Is it fixed in a subsequent release?  Are 
> there any other parameters I can tune?

Not really because you can't tune the rx ring depth.

Check 'sh controller'.

What does 'sh proc cpu sort | excl 0.00' say?

Can you post the configuration..I'm curious what your features
look like because the more you have the less pps you get through
this box..it's all done in software and can't do all features at line
rate during a microburst.

sh int stat 


Rodney


> 
> GigabitEthernet0/1 is up, line protocol is up
>   Hardware is MV64460 Internal MAC, address is 001a.6d30.091b (bia 
> 001a.6d30.091b)
>   Description: to gig-fastiron Ethernet11
>   MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
>      reliability 255/255, txload 23/255, rxload 48/255
>   Encapsulation 802.1Q Virtual LAN, Vlan ID  1., loopback not set
>   Keepalive set (10 sec)
>   Full-duplex, 1000Mb/s, media type is RJ45
>   output flow-control is XON, input flow-control is XON
>   ARP type: ARPA, ARP Timeout 04:00:00
>   Last input 00:00:00, output 00:00:00, output hang never
>   Last clearing of "show interface" counters 00:10:09
>   Input queue: 0/4096/533/0 (size/max/drops/flushes); Total output drops: 0
>   Queueing strategy: fifo
>   Output queue: 0/40 (size/max)
>   30 second input rate 189692000 bits/sec, 30246 packets/sec
>   30 second output rate 91448000 bits/sec, 27197 packets/sec
>      18432915 packets input, 1555851456 bytes, 0 no buffer
>      Received 65 broadcasts, 0 runts, 0 giants, 0 throttles
>      1117 input errors, 0 CRC, 0 frame, 0 overrun, 1117 ignored
>      0 watchdog, 1034 multicast, 0 pause input
>      0 input packets with dribble condition detected
> 
> 
> 
> At 02:16 PM 9/12/2008, Rodney Dunn wrote:
> >Can you bump up your input queue depth:
> >
> >hold-queue 4096 in
> >
> >and see if they stop.
> >
> >I don't suspect that is going to help because the ignores
> >are not increasing that would point to:
> >
> >CSCse05447
> >Externally found moderate defect: Resolved (R)
> >7200 ethernet interfaces should not throttle on input queue full drops
> >
> >Most likely you are seeing micro burst that are coming in faster
> >than the CPU can drain the rx ring.
> >
> >Rodney
> >
> >
> >
> >On Fri, Sep 12, 2008 at 12:50:29PM -0400, Clayton Zekelman wrote:
> >>
> >> I'm running a Cisco 7206/VXR with an NPE G2,  Version 12.4(4)XD4
> >> acting as an LNS.
> >>
> >> I'm getting input errors consistently incrementing on the Gig
> >> interface (ignored errors)
> >>
> >> Any way to fix this?  I saw some discussion a while back about this,
> >> and it seemed to have to do with buffers - but I can't find any
> >> definitive recommendations on what the settings should be.
> >>
> >>
> >>
> >> GigabitEthernet0/1 is up, line protocol is up
> >>   Hardware is MV64460 Internal MAC, address is 001a.6d30.091b (bia
> >> 001a.6d30.091b)
> >>   Description: to gig-fastiron Ethernet11
> >>   MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
> >>      reliability 255/255, txload 22/255, rxload 46/255
> >>   Encapsulation 802.1Q Virtual LAN, Vlan ID  1., loopback not set
> >>   Keepalive set (10 sec)
> >>   Full-duplex, 1000Mb/s, media type is RJ45
> >>   output flow-control is XON, input flow-control is XON
> >>   ARP type: ARPA, ARP Timeout 04:00:00
> >>   Last input 00:00:00, output 00:00:00, output hang never
> >>   Last clearing of "show interface" counters 00:22:17
> >>   Input queue: 0/75/1191/0 (size/max/drops/flushes); Total output drops: 
> >0
> >>   Queueing strategy: fifo
> >>   Output queue: 0/40 (size/max)
> >>   30 second input rate 181384000 bits/sec, 29001 packets/sec
> >>   30 second output rate 86319000 bits/sec, 26045 packets/sec
> >>      38605963 packets input, 4274358612 bytes, 1 no buffer
> >>      Received 230 broadcasts, 0 runts, 0 giants, 0 throttles
> >>      2677 input errors, 0 CRC, 0 frame, 0 overrun, 2677 ignored
> >>      0 watchdog, 2196 multicast, 0 pause input
> >>      0 input packets with dribble condition detected
> >>      34556615 packets output, 1656923135 bytes, 0 underruns
> >>      0 output errors, 0 collisions, 0 interface resets
> >>      0 babbles, 0 late collision, 0 deferred
> >>      0 lost carrier, 0 no carrier, 0 pause output
> >>      0 output buffer failures, 0 output buffers swapped
> >> out
> >>
> >>
> >>
> >> ---
> >> Clayton Zekelman
> >> Managed Network Systems Inc. (MNSi)
> >> 344-300 Tecumseh Rd. E.
> >> Windsor, Ontario
> >> N8X 5E8
> >>
> >> tel. 519-985-8410
> >> fax. 519-985-8409
> >>
> >> _______________________________________________
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> >> https://puck.nether.net/mailman/listinfo/cisco-nsp
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> 
> ---
> Clayton Zekelman
> Managed Network Systems Inc. (MNSi)
> 344-300 Tecumseh Rd. E.
> Windsor, Ontario
> N8X 5E8
> 
> tel. 519-985-8410
> fax. 519-985-8409